The columnist appeared alongside Reverend Richard Coles to debate whether veganism should be treated like a religion

Later, journalist Liz admitted she eats eggs because she "knows their parents" and keeps chickens.

Piers suggested that he would then enjoy steak since he "knows a cow in London Fields".

She shot back: "What I’m saying is if you’re so concerned about the human race the only way we’re going to feed ourselves is by not eating meat. It’s been scientifically proven we cannot consume meat in the way we do because children are starving."

At the end of the interview, the presenter made a bet of £1,000 with Liz that he would outlive her and stood up to shake her hand.